
Here is the link to his Facebook: https://www.facebook.com/share/1BhCNoe7Jj/
And what the user meant was to clarify the false authencity of the rumors on X. Therefore, there was no separation to begin with, and they are still living very happily together.

To be honest, after I reread their explanation, I suppose what they really meant was to distinct between the characters in the manga and the author of the book with his partner (Nanasaki and Ryousuke) in real life. Although I have not found any clarification from Nanasaki-san himself on either X or Facebook, the fact that he still keeps his relationship status and is actively posting on Facebook kinda puts us at ease from the rumors. Until Nanasaki-san has a say in this matter, our assumptions will remain unsolved. However, I do have a strong belief that they are still a power duo, and Nanasaki currently wants to separate between his love life and his business.
I also did some research and apparently it is not authentic. The alleged post was from 2021 and Nanasaki-san's status on Facebook shows that he is still in the relationship and very much active in the campaign. Therefore, combined with "Pon Mi's lyrics" user's explanation, I assure you that they are still a happily married duo, and will continue to be so later on.